 Although there was some small-scale fighting at times, in the first years of the migration, the Ngāi Tahu lived at peace with the Ngāti Mamoe of the Wairau district and intermarried freely with them.Inter-tribal jealousies led in the end, however, to a major battle at Pakihi, just north of the Conway River, in which the Ngāti Mamoe were routed.Thereafter the Ngāi Tahu moved steadily southwards in a campaign of conquest, until after a little more than a generation they had subjugated the Ngāti Mamoe in most of the country of the east coast, as far south as Lake Waihola, south of the Otago peninsula.